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https://issues.apache.org/jira/browse/AMQ-5490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gordon Sim closed AMQ-5490.
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Resolution: Duplicate
> broker does not write out supported version header
> --------------------------------------------------
>
> Key: AMQ-5490
> URL: https://issues.apache.org/jira/browse/AMQ-5490
> Project: ActiveMQ
> Issue Type: Bug
> Components: AMQP
> Affects Versions: 5.10.0
> Reporter: Gordon Sim
>
> If a pre 1.0 client attempt to connect, the broker simply closes the socket
> on reading the protocol-header sent by the client. This prevents the client
> from realising it is a mismatched version (and possibly trying with 1.0)
> From the spec (2.2):
> {noformat}
> If the requested protocol version is not supported, the server MUST
> send a protocol header with a supported protocol version and then
> close the socket.
> and
> If the server cannot parse the protocol header, the server MUST send
> a valid protocol header with a supported protocol version and then
> close the socket.
> {noformat}
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